The term 'KNOWN' can be described in a variety of ways. The four letter solution, 'SEEN, ' implies that the person or thing is visible or observable. The seven letter solution, 'GENERAL, ' suggests that the person or thing is widely known or recognized. The nine letter solution, 'NOTORIOUS, ' implies that the person or thing is well-known for negative reasons. The six letter solution, 'FAMOUS, ' implies that the person or thing is well-known for positive reasons. The twelve letter solution, 'ACKNOWLEDGED, ' implies that the person or thing is accepted or recognized. Finally, the seven letter solution, 'HEARDOF, ' implies that the person or thing is known by reputation. In conclusion, the term 'KNOWN' can be used to describe a person or thing that is visible, widely recognized, NOTORIOUS, FAMOUS, ACKNOWLEDGED, and heard of.